The RC 22 contains the dynamic element of the PR 22 producing much better articulation with high rejection from the sides and rear.
The Heil replacement capsules are interchangeable with any of the screw on type hand held transmitters that receive a 31.3mm/pitch 1.0mm. Some hand held transmitters have a .035 inch hexagonal-head set screw to secure the microphone capsule. If your transmitter has that, loosen the set screw in the handle of the microphone-transmitter before attempting to unscrew the original capsule.
Holding the bottom of the transmitter simply unscrew the original capsule turning it counterclockwise. Carefully remove. The three conductor contact board disconnects the contacts. Avoid touching or damaging the gold plated contacts on the transmitter or the contact board.
Screw your new Heil RC Capsule onto the transmitter handle and tighten.
The Heil RC 22 replacement capsule comes to you with three screens. They are all acoustically identical but give you a choice of the 'look' of your new Heil microphone capsule. Black, Nickel or Gold - your choice.
Type: Large 28.6mm diaphragm dynamic with Heil Isoband™ isolation mount
Frequency Response: 50Hz to 18kHz
Output Level: -55dB @ 1,000Hz
Impedance: Balanced 600 Ohms Output, 3 pin XLR
Polar Pattern: End fire, cardioid, uniform front to back discrimination
Net Weight: 4.9oz (139g)
Finish: Matte black with gold, nickel and black screens